Web-feeding mechanism



H. M. BARBER WEB FEEDING MECHANISM Filed Nov. 9, 1922 3 Sheets-Sheet 1 anm'ntoz W% W Oct. 28 1924. 1,513,574

-' H. M. BARBER 1 was FEEDING MECHANISM Filed Nov. 9, 1922 iSheets-Sheet 2- avwemtoz H. M. BARBER WEB FEEDING MECHANISM I 3 Sheets-Sheet 3 Filed Nov. 9, 1922 I awuemtoz Patented Get. 28, 1 924.

HOWARD BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR TO C. B. COTTRELL &

SONS COMPANY, OF NEW YORK, N. 'Y., A CORPORATION O'F'DELAWARE.

. WEB-FEEDING mnemmsm.

Application filed November 9. 1922. Serial No. 599,897.

To all whom it may concern:

Be it known that I, HOWARD M. BARBER, a citizen of the United States, and resident of Stonington, in the county of New London and State ofConne'cticut, have invented a new and useful Improvement in Web-Feeding Mechanism, of which the following is a specification.

In feeding webs of fabric to cutting mechanisms to be cut into sheets of predetermined lengths, it has been extremely diflicult to properly handle loosely woven or light fabrics, and especially burlap, because of the tendency to wrinkle, by reason of the bias weave, tight and loose selvage and the other imperfections that are always present in materlals of this nature. Customary means consists in either a feed ,drum with pressure feed rollers coacting therewith or a series of feed rollers around which the fabric web is passed in entering the machine. Either of these means causes the looseness or bias wrinkle in the fabric to accumulate back of the feed rollers, this accumulation being forced or fed through the rollers at intervals, thereby causing quite a variation in the length of sheets cut from the web.

The object of my invention is to provide web feeding means which will entirely overcome this objectionable feature.

My invention comprises a feed drum and a pair of pressure feed rollers normally contacting therewith, means being provided for automatically moving the rollers alternately out of contact with the drum to prevent me formation of the looseness or wrinkle, said means being timed to permit both of the rollers together to be left in contact with the drum for a short period in each cycle of operation so as to ensure the Well known feeding of the web at all times.

A practical embodiment of my invention is represented in the accompanying draw.- ings, in Which- Fig. 1 represents in side elevation a portion of a web feeding and cutting mechanism with my invention applied thereto.

Fig. 2 represents a topplan view of the same.

v Fig. 3 represents a detail view, showing one period in the cycle of operations with one of the pressure feed rollers contacting vand operated as follows *Theswinging supports 8 and 9 at both with the feed drum.

Fig. 4' represent a similar view, showing another period in the cycle of operations with both pressure feeding-rollers in contact with the drum. I 4

Fig. 5 represents another period in the cycle of operations, showing the other pressure feed roller moved out of contact with the drum.

Fig. 6 represents a similar view, showin both pressure feeding rollers moved out 0 contact with the drum by the manually operated means. H

The web feed drum 1 is mounted on the shaft 2, which shaft is positively driven from the driveshaft. 3 through the geared connection 4, 5. A pair of pressure feed rollers are denoted by 6, 7, the swinging supports for the roller 6 being denoted by 8 and the swin ing supports for the roller 7 being denote by 9. These swinging sup.- ports 8 and 9 are loosely mounted on a cross shaft 10, located over and in proximity to the feed drum 1. The pressure feed rollers 6 and 7 are positively driven from the shaft 2 of the feed drum, through the gears '11, 12 and 13, except when manually moved out of contact with the web feed drum 1. v I

The rocking movement of the cross shaft 10 is controlled by a rotary box cam 14:, fixed to the shaft 15 which is positively driven from the drive shaft 3 through the train of gears 16, 17, 18, 19. -A lever 20 is fixed to the cross shaft 10 and it is provided with a stud or roller 21, located in the cam groove 22 of the cam 14. Arms 23 are fixed to the cross shaft 10, which arms are provided with laterally extended portions 24, arranged in position to engage the swinging supports 8, 9 of the pressure feed rollers 6 and 7, to alternately move the pressure rollers out of contact with the feed drum l as theshaft is rocked in one or the other direction, a slight lost motion being provided between the arm and supports so that when the shaft is in an intermediate position, both pressure feed rollers 6 and 7 will be left in contact with the feed drum. Springs 25, 26 are provided, in the present instance for yieldin ly holding the pressure feed rollers norma y in contact with the drum.

The means which I have shown for manually raising either one or both of the pressure feed rollers out of contact with the feed drum,- at pleasure, is constructed, arranged ends of the feed rollers are provided with It will-be understood that the automatic movement of the pressure feed rollers 6 and 7 away from the drum is not sufii'cient to break their geared driving connection therewith.

From the above description it will be seen that l have provided means whereby the tendency of the fabric web to loosen or wrinkle back of the feed rollers is obviated by the alternate raising of the feed rollers out of contact with the feed drum, permitting the loose portions of the fabric to pass; the well known feeding of the web being undisturbed by the provision whereby bothof the pressure feed rollers are left in contact with the drum for a short period in each cycle of operations.

It will also be seen that l have provided manual means whereby either one of the pressure feed rollers, or both together, may be moved out of contact with the feed drum, when so desired.

It will also be seen that by positively driving the pressure feed rollers as well as the feed drum, all tendency of the web to slip is eliminated.

It is evident that various changes may be resorted to in the form, construction and arrangement of the several parts Without departing from'the spirit and scope of'my invention; hence I do not wish to be limited to the particular embodiment herein shown and described, but

What I claim is 1. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, and automatic means for movin the rollers alternately out of contact with the drum.

2. Veb feeding mechanism comprising, a feed drum, 2. pair of pressure feed rollers normally contacting therewith, and automatic means for moving;x the rollers alternately out of contact wit the drum, said means being timed to permit both rollers together to be left in contact with the drum fora short period in each cycle of operations.

3. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, automatic means for moving the rollers alternately out of contact with the drum, and manual means for moving either one or both rollers out of contact with the aw at pleasure.

4:. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, automatic means for moving the rollers alternately out of contact with the drum, said means being timed to permit both rollers together to be left in contact with the drum for a short period in each cycle of operations, and manual means for moving either one or both rollers out of contact with the drum, at pleasure.

5. Web feeding mechanism comprising, a feed drum, a pair of positively driven pressure feed rollers contacting therewith, and automatic means for moving the rollers alternately out of contact with the drum.

6. Web feed mechanism comprising, a feed drum, a pair of positively driven pressure feed rollers contacting therewith, and

automatic means for moving the rollers alternately out of contact with the drum, said means being timed to permit both rollers together to be left in contact with the drum for a short period in each cycle of operations.

7. Web feeding mechanism comprising, a feed drum, a pair of positively. driven pressure feed rollers contacting therewith, automatic means for moving the rollers alternately out of contact with the drum, and

manual means for moving either one or both rollers out of contact with the drum, at pleasure.

8. Web feeding mechanism comprising, a feed drum, a pair of positively driven pressure feed rollers contacting therewith, automatic means for moving the rollers alternately out of contact with the d, said means being timed to permit both rollers together to left in contact with the drum for a short period in each cycle of operations, and manual means for moving either one or both rollers out of contact with the drum, at pleasure. Y

9. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, geared connections between the drum and rollers, and

automatic means for moving the rollers alternately out of contact with the drum withouthbreaking their geared connection therewit 10. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting'therewith, geared connections between the drum and rollers, and automatic means for moving the rollers alternately out of contact with the drum without breaking their geared connection therewith, said means being timed to permit both rollers together to be left in contact with the drum for a short period in each cycle of operatlons.

11. Web feeding mechanism com rising, a feed, a pair of pressure fee rollms emma normally contacting therewith, geared connections between the drum and rollers, automatic means for moving the rollers alternately out of contact with the drum without breaking their geared connection therewith, and manual means for moving either one or both rollers out of contact with the drum, at pleasure.

12. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, geared connections between the drum and rollers, automatic means for moving the rollers alternately out of contact with the drum without breaking their geared connection therewith, said means being timed to permit both rollers together to be left in contact with the drum for a short period in each cycle of operations, and manual means for moving either one or both rollers out of contact with the drum, at pleasure.

13. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, a cross shaft, swinging supports for the feed rollers loosely mounted on said shaft, cam controlled means for'rockin the shaft, and an element carried by said s aft in position to engage said feed roller supports for alternately moving the rollers out of contact with the drum.

14. WVeb'feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith a cross shaft, swinging supports for the feed rollers loosely mounted on said shaft, cam controlled means for rockin the shaft, and an element carried by said shaft in position to engage said feed roller supports for alternately moving the rollers out of contact with the drum, the cam controlled means being timed to permit both rollers together to; be left in contact with the drum for a short period in each cycle of operations.

15. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, a cross shaft, swinging supports for the feed rollers loosely mounted on said shaft, cam controlled means for rocking the shaft, an element carried by said shaft in position to enga e said feed roller supports for alternate y moving the rollers out of contact with the drum, and manual means for moving either one or both rollers out of contact with the drum, at pleasure.

16. Web feeding mechanism comprising, a feed drum, a pair of pressure feed rollers normally contacting therewith, a cross shaft, swinging supports for the feed rollers loosely mounted on said shaft, cam controlled means for rocking the shaft, an element carried by said shaft in position toengage said feed roller supports for alternately moving the rollers out of contact with the drum, the cam controlled means being timed to permit both rollers together to be left in contact with the drum for a short period in each cycle of operations, and manual means for moving either one or both rollers ports for alternately moving the rollers out of contact ,with the drum, the movement of the cam controlled lever being timed to permit both rollers together to be left in contact with the drum for a short period in each cycle of operations, and a pair of cam levers arranged to be manually operated for moving either one or both rollers out of contact with the feed drum,-'at pleasure.

18. Web feeding mechanism comprising, a feed drum, a pair of rollers normally contacting therewith, and automatic means for alternately moving each feed roller out of contact with the feed drum, at intervals.

19. Web feeding mechanism comprising, a feed'drum, a pair of rollers normally contacting therewith, and automatic means for alternately moving each feed roller out of contact with the feed drum, at intervals, said means being timed to permit the feed rollers to be left in contact with the drum for a short period, at intervals.

20. Web feeding mechanism comprising, a feed drum, pressure feed rollers normally contacting therewith, means for moving each feed roller out of contact with the feed drum,'at intervals, and manual means for moving each feed roller out of contact with said drum, at pleasure.

. 21. A feed drum, pressure feed rollers normally contacting therewith, means for moving each feed roller out of contact with the feed drum, at intervals, said means being timed to permit the said feed rollers to be left in contact with the drum for a short period, at intervals, and manual means for moving each feed roller out of contactwith said drum, at pleasure.

, In testimony, that I claim the foregoing as my invention, I have signed my name this 2d day of November A. D. 1922.

HOWARD M. BARBER. 

